YUV_PARAMS

Summary

The YUV_PARAMS structure provides information about YUV conversion properties. It is used to describe some YUV format to be converted to another color conversion. For more information see Generic YUV Conversion.

Syntax

typedef struct _YUV_PARAMS 
{ 
   L_UINT uStructSize; 
   L_INT nMask; 
   L_INT nUh; 
   L_INT nUv; 
   L_INT nVh; 
   L_INT nVv; 
   L_INT *pOffsets; 
   L_INT nMacroPixel; 
   L_INT nRange; 
   L_BOOL bPlanar; 
   L_UINT uOffsetCount; 
} YUV_PARAMS, *LPYUV_PARAMS; 

Members

uStructSize

Size of this structure

nMask

Masking value. This can be any combination of the following values:

nUh

Integer that represents the horizontal subsampling period of U

nUv

Integer that represents the vertical subsampling period of U.

nVh

Integer that represents the horizontal subsampling period of V.

nVv

Integer that represents the vertical subsampling period of V.

pOffsets

Pointer to integer array that represents offsets of the byte ordering for the proposed YUV format. When bPlanar is TRUE, the only useful data is pOffsets[0] which will indicate what is the arrangement of the YUV buffer. Possible values are:

If bPlanar is FALSE, uOffsetCount indicates the number of items in the pOffsets array.

nMacroPixel

Macropixel size, which is the number of pixels in the unit pixels group.

nRange

Integer represents the range of values in the input buffer; full range, or 16-240 (YUVRANGE_FULL, and YUVRANGE_16_240).

bPlanar

Value that indicates whether the buffer consists of the Y plane, V plane and U plane. Possible values are:

uOffsetCount

Value that indicates the number of values in the pOffsets array.

Comments

LPYUV_PARAMS is a pointer to a YUV_PARAMS structure. Where the function parameter type is LPYUV_PARAMS, you can declare a YUV_PARAMS variable, update the structure's fields, and pass the variable's address. Declaring a LPYUV_PARAMS variable is necessary only if your program requires a pointer.

Usage

• CONVERSION_PARAMS