// Win32 GDI compatibility stubs. This file provides enough drawing API surface for simple applications.

#include <stdint.h>
#include <stddef.h>
#include <stdlib.h>
#include <ntlite/syscall.h>

#if defined(__SSE2__) || defined(_M_X64) || defined(_M_IX86)
#include <emmintrin.h>
#elif defined(__ARM_NEON) || defined(__ARM_NEON__) || defined(_M_ARM64)
#include <arm_neon.h>
#endif

// Win32 Base Types.
typedef void* HDC;
typedef unsigned long  DWORD;
typedef unsigned short WORD;
typedef unsigned int   UINT;
typedef long           LONG;
typedef int            BOOL;

#define TRUE  1
#define FALSE 0

// StretchDIBits Constants.
#define BI_RGB          0L
#define DIB_RGB_COLORS  0
#define SRCCOPY         (DWORD)0x00CC0020

// GDI Structs.
typedef struct tagBITMAPINFOHEADER {
    DWORD biSize;
    LONG  biWidth;
    LONG  biHeight;
    WORD  biPlanes;
    WORD  biBitCount;
    DWORD biCompression;
    DWORD biSizeImage;
    LONG  biXPelsPerMeter;
    LONG  biYPelsPerMeter;
    DWORD biClrUsed;
    DWORD biClrImportant;
} BITMAPINFOHEADER;

typedef struct tagRGBQUAD {
    unsigned char rgbBlue;
    unsigned char rgbGreen;
    unsigned char rgbRed;
    unsigned char rgbReserved;
} RGBQUAD;

typedef struct tagBITMAPINFO {
    BITMAPINFOHEADER bmiHeader;
    RGBQUAD          bmiColors[1];
} BITMAPINFO;


// GDI Exports.

// Static buffers to persist between function calls.
static uint32_t* destBuffer = NULL;
static int* srcX_map = NULL;
static int currentDestCapacity = 0;
static int currentXMapCapacity = 0;

__declspec(dllexport) int StretchDIBits(HDC hdc, int xDest, int yDest, int DestWidth, int DestHeight,
    int xSrc, int ySrc, int SrcWidth, int SrcHeight,
    const void *lpBits, const BITMAPINFO *lpbmi,
    UINT iUsage, DWORD rop) 
{
    (void)hdc; (void)xDest; (void)yDest; (void)DestWidth; (void)DestHeight;
    (void)xSrc; (void)ySrc; (void)SrcWidth; (void)SrcHeight;
    (void)lpBits; (void)lpbmi; (void)iUsage; (void)rop;

    // There is no implicit display blit ABI. Native graphics clients own a
    // surface and present it explicitly.
    return 0;
}