mlib_VideoColorJFIFYCCK2CMmediaLibLLibramlib_VideoColorJFIFYCCK2CMYK444(3MLIB)NAMEmlib_VideoColorJFIFYCCK2CMYK444 - JFIF YCbCr to CMYK color conversion
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_VideoColorJFIFYCCK2CMYK444(mlib_u8 *cmyk,
const mlib_u8 *y, const mlib_u8 *cb,
const mlib_u8 *cr, const mlib_u8 *k,
mlib_s32 n);
DESCRIPTION
The mlib_VideoColorJFIFYCCK2CMYK444() function performs color space
conversion from YCbCrK to CMYK when used in the JPEG File Interchange
Format (JFIF).
The following equation is used:
R = Y + 1.40200 * (Cr - 128)
G = Y - 0.34414 * (Cb - 128) - 0.71414 * (Cr - 128)
B = Y + 1.77200 * (Cb - 128)
C = (255 - R)
M = (255 - G)
Y = (255 - B)
K = K
PARAMETERS
The function takes the following arguments:
cmyk Pointer to destination CMYK multi-component row. cmyk must be
8-byte aligned.
y Pointer to source Y component row. y must be 8-byte aligned.
cb Pointer to source Cb component row. cb must be 8-byte aligned.
cr Pointer to source Cr component row. cr must be 8-byte aligned.
k Pointer to source K component row. k must be 8-byte aligned.
n Length of Y, Cb, Cr, and K component rows. The length of the
CMYK multi-component row must be 4*n.
RETURN VALUES
The function returns MLIB_SUCCESS if successful. Otherwise it returns
MLIB_FAILURE.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Committed │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │MT-Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOmlib_VideoColorCMYK2JFIFYCCK444(3MLIB), attributes(5)SunOS 5.10 23 Maymlib_VideoColorJFIFYCCK2CMYK444(3MLIB)
