reactos/modules/rostests/apitests/win32nt/ntgdi/NtGdiGetDIBits.c

/*
 * PROJECT:         ReactOS api tests
 * LICENSE:         GPL - See COPYING in the top level directory
 * PURPOSE:         Test for NtGdiGetDIBitsInternal
 * PROGRAMMERS:
 */

#include <win32nt.h>

/* taken from gdi32, bitmap.c */
UINT
FASTCALL
DIB_BitmapMaxBitsSize( PBITMAPINFO Info, UINT ScanLines )
{
    UINT MaxBits = 0;

    if (Info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
    {
       PBITMAPCOREHEADER Core = (PBITMAPCOREHEADER)Info;
       MaxBits = Core->bcBitCount * Core->bcPlanes * Core->bcWidth;
    }
    else  /* assume BITMAPINFOHEADER */
    {
       if ((Info->bmiHeader.biCompression) && (Info->bmiHeader.biCompression != BI_BITFIELDS))
           return Info->bmiHeader.biSizeImage;
    // Planes are over looked by Yuan. I guess assumed always 1.
       MaxBits = Info->bmiHeader.biBitCount * Info->bmiHeader.biPlanes * Info->bmiHeader.biWidth;
    }
    MaxBits = ((MaxBits + 31) & ~31 ) / 8; // From Yuan, ScanLineSize = (Width * bitcount + 31)/32
    return (MaxBits * ScanLines);  // ret the full Size.
}


START_TEST(NtGdiGetDIBitsInternal)
{
    HBITMAP hBitmap;
    struct
    {
        BITMAPINFO bi;
        RGBQUAD Colors[20];
    } bmp;
//  BITMAPINFO bi;
    INT ScreenBpp;
    BITMAPCOREINFO bic;
    DWORD data[20*16];

    HDC hDCScreen = GetDC(NULL);
    ok(hDCScreen != NULL, "hDCScreen was NULL.\n");

    hBitmap = CreateCompatibleBitmap(hDCScreen, 16, 16);
    ok(hBitmap != NULL, "hBitmap was NULL.\n");

    SetLastError(ERROR_SUCCESS);
    ok_int(NtGdiGetDIBitsInternal(0, 0, 0, 0, NULL, NULL, 0, 0, 0), 0);
    ok_long(GetLastError(), ERROR_SUCCESS);

    SetLastError(ERROR_SUCCESS);
    ok_int(NtGdiGetDIBitsInternal((HDC)2345, 0, 0, 0, NULL, NULL, 0, 0, 0), 0);
    ok_long(GetLastError(), ERROR_SUCCESS);

    SetLastError(ERROR_SUCCESS);
    ok_int(NtGdiGetDIBitsInternal((HDC)2345, hBitmap, 0, 0, NULL, NULL, 0, 0, 0), 0);
    ok_long(GetLastError(), ERROR_SUCCESS);

    SetLastError(ERROR_SUCCESS);
    ok_int(NtGdiGetDIBitsInternal(hDCScreen, hBitmap, 0, 0, NULL, NULL, 0, 0, 0), 0);
    ok_long(GetLastError(), ERROR_SUCCESS);

    SetLastError(ERROR_SUCCESS);
    ok_int(NtGdiGetDIBitsInternal(hDCScreen, hBitmap, 0, 15, NULL, NULL, 0, 0, 0), 0);
    ok_long(GetLastError(), ERROR_SUCCESS);

    ZeroMemory(&bmp, sizeof(bmp));
    bmp.bi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
    FillMemory(&bmp.Colors, sizeof(bmp.Colors), 0x44);

    SetLastError(ERROR_SUCCESS);
    ok(NtGdiGetDIBitsInternal((HDC)0, hBitmap, 0, 15, NULL, &bmp.bi, 0, 0, 0) > 0,
       "NtGdiGetDIBitsInternal((HDC)0, hBitmap, 0, 15, NULL, &bmp.bi, 0, 0, 0) <= 0.\n");
    ok_long(GetLastError(), ERROR_SUCCESS);
    ok_int(bmp.Colors[0].rgbRed, 0x44);

    ZeroMemory(&bmp, sizeof(bmp));
    bmp.bi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
    FillMemory(&bmp.Colors, sizeof(bmp.Colors), 0x44);

    SetLastError(ERROR_SUCCESS);
    ok(NtGdiGetDIBitsInternal((HDC)2345, hBitmap, 0, 15, NULL, &bmp.bi, 0, 0, 0) > 0,
       "The return value was <= 0.\n");
    ok_long(GetLastError(), ERROR_SUCCESS);
    ok_int(bmp.Colors[0].rgbRed, 0x44);

    ZeroMemory(&bmp, sizeof(bmp));
    bmp.bi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
    FillMemory(&bmp.Colors, sizeof(bmp.Colors), 0x44);

    SetLastError(ERROR_SUCCESS);
    ok(NtGdiGetDIBitsInternal(hDCScreen, hBitmap, 0, 15, NULL, &bmp.bi, DIB_RGB_COLORS,
       DIB_BitmapMaxBitsSize(&bmp.bi, 15), 0) > 0, "The return value was <= 0.\n");
    ok_long(GetLastError(), ERROR_SUCCESS);

    ScreenBpp = GetDeviceCaps(hDCScreen, BITSPIXEL);

    ok_long(bmp.bi.bmiHeader.biWidth, 16);
    ok_long(bmp.bi.bmiHeader.biHeight, 16);
    ok_long(bmp.bi.bmiHeader.biBitCount, ScreenBpp);
    ok_long(bmp.bi.bmiHeader.biSizeImage, (16 * 16) * (ScreenBpp / 8));

    ok_int(bmp.Colors[0].rgbRed, 0x44);

    /* Test with pointer */
//  ZeroMemory(&bmp.bi, sizeof(BITMAPINFO));
    bmp.bi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
//  FillMemory(&bmp.Colors, sizeof(bmp.Colors), 0x11223344);

    SetLastError(ERROR_SUCCESS);
    ok(NtGdiGetDIBitsInternal(hDCScreen, hBitmap, 0, 15, (void*)data, &bmp.bi, DIB_RGB_COLORS,
       DIB_BitmapMaxBitsSize(&bmp.bi, 15), 0) > 0, "The return value was <= 0.\n");
    ok_long(GetLastError(), ERROR_SUCCESS);

    ok_long(bmp.bi.bmiHeader.biWidth, 16);
    ok_long(bmp.bi.bmiHeader.biHeight, 16);
    ok_long(bmp.bi.bmiHeader.biBitCount, ScreenBpp);
    ok_long(bmp.bi.bmiHeader.biSizeImage, (16 * 16) * (ScreenBpp / 8));

    ok(bmp.Colors[0].rgbRed != 0x44, "bmp.Colors[0].rgbRed was 0x44.\n");

    /* Test a BITMAPCOREINFO structure */
    SetLastError(ERROR_SUCCESS);
    ZeroMemory(&bic, sizeof(BITMAPCOREINFO));
    bic.bmciHeader.bcSize = sizeof(BITMAPCOREHEADER);
    ok(NtGdiGetDIBitsInternal(hDCScreen, hBitmap, 0, 15, NULL, (PBITMAPINFO)&bic, DIB_RGB_COLORS,
       DIB_BitmapMaxBitsSize((PBITMAPINFO)&bic, 15), 0) > 0, "The return value was <= 0.\n");
    ok_long(GetLastError(), ERROR_SUCCESS);


    ReleaseDC(NULL, hDCScreen);
    DeleteObject(hBitmap);

}