WICPlanarOptions enumeration (wincodec.h)

Specifies additional options to an IWICPlanarBitmapSourceTransform implementation.

Syntax

typedef enum WICPlanarOptions {
  WICPlanarOptionsDefault = 0,
  WICPlanarOptionsPreserveSubsampling = 0x1,
  WICPLANAROPTIONS_FORCE_DWORD = 0x7fffffff
} ;

Constants

WICPlanarOptionsDefault Value: 0 No options specified. WIC JPEG Decoder: The default behavior for iDCT scaling is to preserve quality when downscaling by downscaling only the Y plane in some cases, and the image may change to 4:4:4 chroma subsampling.
WICPlanarOptionsPreserveSubsampling Value: 0x1 Asks the source to preserve the size ratio between planes when scaling. WIC JPEG Decoder: Specifying this option causes the JPEG decoder to scale luma and chroma planes by the same amount, so a 4:2:0 chroma subsampled image outputs 4:2:0 data when downscaling by 2x, 4x, or 8x.
WICPLANAROPTIONS_FORCE_DWORD Value: 0x7fffffff

Requirements

Requirement	Value
Minimum supported client	Windows 8.1 [desktop apps | UWP apps]
Minimum supported server	Windows Server 2012 R2 [desktop apps | UWP apps]
Header	wincodec.h

See also

IWICPlanarBitmapSourceTransform::CopyPixels

IWICPlanarBitmapSourceTransform::DoesSupportTransform