mlib_VideoColorCMYK2JFIFYCmediaLibLLibramlib_VideoColorCMYK2JFIFYCCK444(3MLIB)NAMEmlib_VideoColorCMYK2JFIFYCCK444 - CMYK to JFIF YCbCr color conversion
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_VideoColorCMYK2JFIFYCCK444(mlib_u8 *y, mlib_u8 *cb,
mlib_u8 *cr, mlib_u8 *k, const mlib_u8 *cmyk, mlib_s32 n);
DESCRIPTION
The mlib_VideoColorCMYK2JFIFYCCK444() function performs color space
conversion from CMYK to YCbCrK when used in the JPEG File Interchange
Format (JFIF).
The following equation is used:
R = (255 - C)
G = (255 - M)
B = (255 - Y)
Y = 0.29900 * R + 0.58700 * G + 0.11400 * B
Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + 128
Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + 128
K = K
PARAMETERS
The function takes the following arguments:
y Pointer to destination Y component row. y must be 8-byte
aligned.
cb Pointer to destination Cb component row. cb must be 8-byte
aligned.
cr Pointer to destination Cr component row. cr must be 8-byte
aligned.
k Pointer to destination K component row. k must be 8-byte
aligned.
cmyk Pointer to source CMYK multi-component row. cmyk 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_VideoColorJFIFYCCK2CMYK444(3MLIB), attributes(5)SunOS 5.10 23 Maymlib_VideoColorCMYK2JFIFYCCK444(3MLIB)
