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72 lines
2.3 KiB
C
72 lines
2.3 KiB
C
/* taken from gdi32, bitmap.c */
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UINT
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FASTCALL
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DIB_BitmapMaxBitsSize( PBITMAPINFO Info, UINT ScanLines )
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{
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UINT MaxBits = 0;
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if (Info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
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{
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PBITMAPCOREHEADER Core = (PBITMAPCOREHEADER)Info;
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MaxBits = Core->bcBitCount * Core->bcPlanes * Core->bcWidth;
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}
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else /* assume BITMAPINFOHEADER */
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{
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if ((Info->bmiHeader.biCompression) && (Info->bmiHeader.biCompression != BI_BITFIELDS))
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return Info->bmiHeader.biSizeImage;
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// Planes are over looked by Yuan. I guess assumed always 1.
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MaxBits = Info->bmiHeader.biBitCount * Info->bmiHeader.biPlanes * Info->bmiHeader.biWidth;
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}
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MaxBits = ((MaxBits + 31) & ~31 ) / 8; // From Yuan, ScanLineSize = (Width * bitcount + 31)/32
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return (MaxBits * ScanLines); // ret the full Size.
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}
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INT
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Test_NtGdiGetDIBitsInternal(PTESTINFO pti)
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{
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HBITMAP hBitmap;
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BITMAPINFO bi;
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INT ScreenBpp;
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HDC hDCScreen = GetDC(NULL);
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ASSERT(hDCScreen != NULL);
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hBitmap = CreateCompatibleBitmap(hDCScreen, 16, 16);
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ASSERT(hBitmap != NULL);
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SetLastError(ERROR_SUCCESS);
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RTEST(NtGdiGetDIBitsInternal(0, 0, 0, 0, NULL, NULL, 0, 0, 0) == 0);
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RTEST(GetLastError() == ERROR_SUCCESS);
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SetLastError(ERROR_SUCCESS);
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RTEST(NtGdiGetDIBitsInternal((HDC)2345, 0, 0, 0, NULL, NULL, 0, 0, 0) == 0);
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RTEST(GetLastError() == ERROR_SUCCESS);
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SetLastError(ERROR_SUCCESS);
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RTEST(NtGdiGetDIBitsInternal((HDC)2345, hBitmap, 0, 0, NULL, NULL, 0, 0, 0) == 0);
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RTEST(GetLastError() == ERROR_SUCCESS);
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SetLastError(ERROR_SUCCESS);
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RTEST(NtGdiGetDIBitsInternal((HDC)2345, hBitmap, 0, 15, NULL, &bi, 0, 0, 0) == 0);
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RTEST(GetLastError() == ERROR_SUCCESS);
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SetLastError(ERROR_SUCCESS);
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ZeroMemory(&bi, sizeof(BITMAPINFO));
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bi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
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RTEST(NtGdiGetDIBitsInternal(hDCScreen, hBitmap, 0, 15, NULL, &bi, DIB_RGB_COLORS,
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DIB_BitmapMaxBitsSize(&bi, 15), 0) > 0);
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RTEST(GetLastError() == ERROR_SUCCESS);
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ScreenBpp = GetDeviceCaps(hDCScreen, BITSPIXEL);
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RTEST(bi.bmiHeader.biWidth == 16);
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RTEST(bi.bmiHeader.biHeight == 16);
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RTEST(bi.bmiHeader.biBitCount == ScreenBpp);
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RTEST(bi.bmiHeader.biSizeImage == (16 * 16) * (ScreenBpp / 8));
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ReleaseDC(NULL, hDCScreen);
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DeleteObject(hBitmap);
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return APISTATUS_NORMAL;
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}
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