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CImageDisplay::GetBitMasks

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Microsoft DirectShow 9.0

CImageDisplay::GetBitMasks

The GetBitMasks method retrieves the color masks for a specified VIDEOINFO format.

Syntax

  const DWORD *GetBitMasks(
    const VIDEOINFO *pVideoInfo
);

Parameters

pVideoInfo

Pointer to the VIDEOINFO structure.

Return Value

Returns an array of three DWORD values.

Remarks

If the biCompression member is BI_BITFIELDS, the method returns a pointer to the color masks that are supplied in the dwBitMasks member. If the biCompression member is BI_RGB, the method returns the color masks that correspond to the bit depth. If the method fails (for example, the bit depth is less than 16), the method returns the array {0,0,0}.

Requirements

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

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

See Also