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DXVADDI_FREQUENCY structure (d3dumddi.h)

  • Article

The DXVADDI_FREQUENCY structure describes the video frame rate in Hertz (Hz). For example, NTSC TV is 60000 over 1001.

Syntax

typedef struct _DXVADDI_FREQUENCY {
  [in] UINT Numerator;
  [in] UINT Denominator;
} DXVADDI_FREQUENCY;

Members

[in] Numerator

The numerator of the frequency fraction.

[in] Denominator

The denominator of the frequency fraction.

Remarks

The user-mode display driver must interpret the video frame rate for the following special cases as indicated:

  • Numerator/Denominator = 0/0 is interpreted as an unknown frequency.
  • Numerator/Denominator = n/0, where n is any number, is interpreted as invalid.
  • Numerator/Denominator = 0/n is interpreted as zero frequency.

Requirements

Requirement Value
Minimum supported client Available in Windows Vista and later versions of the Windows operating systems.
Header d3dumddi.h (include D3dumddi.h)

See also

DXVADDI_VIDEODESC