NtGdiGetDIBits.c File Reference

#include "../win32nt.h"

Include dependency graph for NtGdiGetDIBits.c:

Go to the source code of this file.

Functions
UINT FASTCALL	DIB_BitmapMaxBitsSize (PBITMAPINFO Info, UINT ScanLines)
	START_TEST (NtGdiGetDIBitsInternal)

Function Documentation

DIB_BitmapMaxBitsSize()

UINT FASTCALL DIB_BitmapMaxBitsSize	(	PBITMAPINFO	Info,
		UINT	ScanLines
	)

Definition at line 13 of file NtGdiGetDIBits.c.

{
    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.
}

Referenced by START_TEST().

START_TEST()

START_TEST

(

NtGdiGetDIBitsInternal

)

Definition at line 34 of file NtGdiGetDIBits.c.

{
    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);
 
}