GlobalUtil.h

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//      File:           GlobalUtil.h
//      Author:         Changchang Wu
//      Description : 
//              GlobalParam:    Global parameters
//              ClockTimer:             Timer 
//              GlobalUtil:             Global Function wrapper
//
//      Copyright (c) 2007 University of North Carolina at Chapel Hill
//      All Rights Reserved
//
//      Permission to use, copy, modify and distribute this software and its
//      documentation for educational, research and non-profit purposes, without
//      fee, and without a written agreement is hereby granted, provided that the
//      above copyright notice and the following paragraph appear in all copies.
//
//      The University of North Carolina at Chapel Hill make no representations
//      about the suitability of this software for any purpose. It is provided
//      'as is' without express or implied warranty. 
//
//      Please send BUG REPORTS to ccwu@cs.unc.edu
//


#ifndef _GLOBAL_UTILITY_H
#define _GLOBAL_UTILITY_H


//wrapper for some shader function
//class ProgramGPU;
class LiteWindow;

class GlobalParam
{
public:
        static GLuint   _texTarget;
        static GLuint   _iTexFormat;
        static int              _texMaxDim;
        static int              _texMaxDimGL; 
    static int      _texMinDim;
        static int              _verbose;
        static int              _timingS;
        static int              _timingO;
        static int              _timingL;
        static int              _usePackedTex;
        static int              _BetaFilter;
        static int              _IsNvidia;
        static int              _UseCUDA;
    static int      _UseOpenCL;
        static int              _UseDynamicIndexing; 
        static int              _debug;
        static int              _MaxFilterWidth;
        static float    _FilterWidthFactor;
        static float    _OrientationWindowFactor;
        static float    _DescriptorWindowFactor; 
        static int              _MaxOrientation;
        static int      _OrientationPack2;
        static int              _ListGenGPU;
        static int              _ListGenSkipGPU;
        static int              _SupportNVFloat;
        static int              _SupportTextureRG;
        static int              _FullSupported;
        static float    _MaxFeaturePercent;
        static int              _MaxLevelFeatureNum;
        static int              _DescriptorPPR; 
        static int              _DescriptorPPT; //pixel per texture for one descriptor
        static int              _FeatureTexBlock;
        static int              _NarrowFeatureTex; //implemented but no performance improvement
        static int              _SubpixelLocalization;
        static int              _ProcessOBO; //not implemented yet
    static int      _TruncateMethod;
        static int              _PreciseBorder; //implemented
        static int              _UseSiftGPUEX;
        static int              _ForceTightPyramid;
        static int              _octave_min_default;
        static int              _octave_num_default;
        static int              _InitPyramidWidth;
        static int              _InitPyramidHeight;
        static int              _PreProcessOnCPU;
        static int              _GoodOpenGL;
        static int              _FixedOrientation;
        static int              _LoweOrigin;
        static int              _ExitAfterSIFT; 
        static int              _NormalizedSIFT;
        static int              _BinarySIFT;
        static int              _KeepExtremumSign;
        static int              _FeatureCountThreshold;
    static int      _KeyPointListForceLevel0;
        //for compatable with old version:
        static float    _OrientationExtraFactor;
        static float    _OrientationGaussianFactor;
        static float    _MulitiOrientationThreshold;

        static int                              _WindowInitX;
        static int                              _WindowInitY;
        static const char*              _WindowDisplay;
    static int              _DeviceIndex; 
};


class ClockTimer
{
private:
        char _current_event[256];
        int  _time_start;
        int  _time_stop;
public:
        static int        ClockMS();
        static double CLOCK();
        static void       InitHighResolution();
        void StopTimer(int verb = 1);
        void StartTimer(const char * event, int verb=0);
        float  GetElapsedTime();
};

class GlobalUtil:public GlobalParam
{
    static ClockTimer _globalTimer;                             
public:
        inline static double CLOCK()                            {       return ClockTimer::CLOCK();                     }
        inline static void StopTimer()                          {       _globalTimer.StopTimer(_timingS);                       }
        inline static void StartTimer(const char * event)       {       _globalTimer.StartTimer(event, _timingO);       }
        inline static float GetElapsedTime()            {       return _globalTimer.GetElapsedTime();           }

        static void FitViewPort(int width, int height);
        static void SetTextureParameter();
        static void SetTextureParameterUS();
#ifdef _DEBUG
        static void CheckErrorsGL(const char* location = NULL);
#else
        static void inline CheckErrorsGL(const char* location = NULL){};
#endif
        static bool CheckFramebufferStatus();
        //initialize Opengl parameters
        static void InitGLParam(int NotTargetGL = 0);
        static void SetGLParam();
        static int  CreateWindowEZ();
        static void CleanupOpenGL();
    static void SetDeviceParam(int argc, char** argv);
    static int  CreateWindowEZ(LiteWindow* window);
};


#if defined(_MSC_VER) && _MSC_VER == 1200
#define max(a,b)    (((a) > (b)) ? (a) : (b))
#define min(a,b)    (((a) < (b)) ? (a) : (b))
#endif

#endif