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CImageDisplay::CheckHeaderValidity

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Microsoft DirectShow 9.0

CImageDisplay::CheckHeaderValidity

The CheckHeaderValidity method validates a BITMAPINFOHEADER structure. This method is useful only for uncompressed RGB types, not for compressed types or YUV types.

Syntax

  BOOL CheckHeaderValidity(
    const VIDEOINFO *pInput
);

Parameters

pInput

Pointer to a VIDEOINFO structure containing the BITMAPINFOHEADER structure.

Return Value

Returns TRUE if the BITMAPINFOHEADER is valid, or FALSE otherwise.

Remarks

This method checks that the image dimensions are non-negative; the compression type is BI_RGB or BI_BITFIELDS; the color depth and color masks are valid; the biPlanes member equals one; and the biSize and biSizeImage members are correct. It also checks for common errors in the palette entries, if any.

Requirements

**  Header:** Declared in Winutil.h; include Streams.h.

**  Library:** Use Strmbase.lib (retail builds) or Strmbasd.lib (debug builds).

See Also