SampleUp444LS

Creates pixel-order image from 444 MCU and performs level shift.

Syntax

IppStatus ippiSampleUp444LS_MCU_16s8u_P3C3R(const Ipp16s* pSrcMCU[3], Ipp8u* pDst, int dstStep);

Parameters

pSrcMCU	Pointer to the array of 3 pointers to the source blocks.
pDst	Pointer to the destination image ROI.
dstStep	Distance in bytes between starts of consecutive lines in the destination image.

Description

The function ippiSampleUp444LS_MCU is declared in the ippj.h file. It operates with ROI (see Regions of Interest in Intel IPP).

This function creates pixel-order image from 444 MCU (see Figure “MCU Structure for Different JPEG Sampling Formats”).

Additionally, this function converts data from the signed Ipp16s range [-128..127] to the unsigned Ipp8u range [0..255] performing level shift operation (by adding 128).

Return Values

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error condition if any of the specified pointers is NULL.
ippStsStepErr	Indicates an error condition if dstStep has a zero or negative value.