#pragma once

#if defined(WIN32) || defined(_WIN64)
#define OS_WIN  1
#else
#define OS_WIN  0
#endif

#define SIZE_KB(n)                  ((n) * 1024)
#define SIZE_MB(n)                  SIZE_KB(n * 1024)
#define SIZE_GB(n)                  SIZE_MB(n * 1024)

#define SEC_2_MS(s)                 ((s) * 1000)
#define MSEC_2_US(ms)               ((ms) * 1000)
#define SEC_2_US(s)                 MSEC_2_US(SEC_2_MS(s))

#define ALIGN_TO(v, align)          (((v) + (align) - 1) / (align) * (align))
#define ALIGN_INT(v)                ALIGN_TO(v, sizeof(int))

#define RETURN_ENUM_STR(v, e)       \
    if(v == e)                      \
        return #e;


#if !OS_WIN // migrate codes from windows to linux ...
#include <unistd.h>
#include <stdint.h>
#include <sys/types.h>
#include <dlfcn.h>
#include <semaphore.h>

#pragma pack(push)
#pragma pack(1)
typedef struct BITMAPFILEHEADER
{
    u_int16_t bfType;
    u_int32_t bfSize;
    u_int16_t bfReserved1;
    u_int16_t bfReserved2;
    u_int32_t bfOffBits;
}BITMAPFILEHEADER;

typedef struct BITMAPINFOHEADER
{
    u_int32_t biSize;
    u_int32_t biWidth;
    u_int32_t biHeight;
    u_int16_t biPlanes;
    u_int16_t biBitCount;
    u_int32_t biCompression;
    u_int32_t biSizeImage;
    u_int32_t biXPelsPerMeter;
    u_int32_t biYPelsPerMeter;
    u_int32_t biClrUsed;
    u_int32_t biClrImportant;
}BITMAPINFODEADER;
#pragma pack(pop)
#define	BI_RGB		0
#define MAKEWORD(a, b)		    (((a) & 0x0ff) | (((b) & 0x0ff) << 8))
#define MAKELONG(a, b)		    (((a) & 0x0ffff) | (((b) & 0x0ffff) << 16))
#define _countof(a)			    (sizeof(a) / sizeof((a)[0]))

typedef long                    LONG;
typedef void*                   HANDLE;
typedef void*                   HWND;
typedef void*                   HMODULE;
typedef void*                   LPVOID;
typedef void*                   FARPROC;
typedef unsigned int            DWORD;
typedef unsigned short          WORD;
typedef unsigned short          UINT16;
typedef unsigned char           BYTE;
typedef int                     BOOL;

#define TRUE                    1
#define FALSE                   0
#define MAX_PATH                256
#define huge
#define FAR                 
#define NEAR                
#define LOWORD(v)               ((v) & 0x0ffff)
#define HIWORD(v)               (((v) >> 16) & 0x0ffff)
#define PASCAL                  __attribute__((stdcall))
#define _countof(a)             (sizeof(a) / sizeof(a[0]))
#define LOAD_WITH_ALTERED_SEARCH_PATH   RTLD_NOW
#define FreeLibrary             dlclose
#define GetProcAddress          dlsym
#define GetPrivateProfileIntW   GetPrivateProfileIntA
#define lstrlenA                strlen
#define lstrlenW                strlen

#define DLL_EXTESION            "so"
#define PATH_SEPARATOR          "/"
#define STRICMP	                strcasecmp
#define MKDIR(a, b)		        mkdir(a, b)
#define STDCALL
#define ERROR_CANCELLED         1223
#define USB_TIMEOUT_INFINITE    0
#define FSEEK                   fseek
#define FTELL                   ftell
#define INVALID_HANDLE_VALUE    ((HANDLE)(-1))


extern DWORD GetLastError(void);
extern DWORD GetPrivateProfileIntA(const char* app, const char* key, DWORD def, const char* file);
extern DWORD GetPrivateProfileStringA(const char* app, const char* key, const char* init, char* buf, size_t len, const char* file);
extern void Sleep(DWORD milliseconds);
extern int GetModuleFileNameA(HMODULE module, char* buf, size_t len);   // NOTE: parameter 'module' is consinder as a part of the module file name
extern uint64_t GetCurrentProcessId(void);
extern uint64_t GetCurrentThreadId(void);

#else
#include <Windows.h>

#define bzero(a, l)             memset(a, 0, l)
#define DLL_EXTESION            "dll"
#define PATH_SEPARATOR          "\\"
#define STRICMP	                stricmp
#define MKDIR(a, b)		        mkdir(a)
#define STDCALL                 __stdcall
#define sem_t                   HANDLE
#define USB_TIMEOUT_INFINITE    -1
#define FSEEK                   _fseeki64
#define FTELL                   _ftelli64
#define pid_t	                int

#endif