mlib_VideoColorRGB2JFIFYCCmediaLibBLibrarymlib_VideoColorRGB2JFIFYCC444(3MLIB)NAMEmlib_VideoColorRGB2JFIFYCC444 - RGB to JFIF YCbCr color conversion
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_VideoColorRGB2JFIFYCC444(mlib_u8 *y, mlib_u8 *cb,
mlib_u8 *cr, const mlib_u8 *rgb, mlib_s32 n);
DESCRIPTION
The mlib_VideoColorRGB2JFIFYCC444() function performs color space con‐
version from RGB to YCbCr when used in the JPEG File Interchange Format
(JFIF).
The following equation is used:
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
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.
rgb Pointer to source RGB multi-component row. rgb must be 8-byte
aligned.
n Length of Y component row. The length of Cb and Cr component
rows must be n. The length of the RGB multi-component row must
be 3*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_VideoColorABGR2JFIFYCC444(3MLIB), mlib_VideoColorARGB2JFI‐
FYCC444(3MLIB), mlib_VideoColorRGB2JFIFYCC444_S16(3MLIB), attributes(5)SunOS 5.10 23 May 2mlib_VideoColorRGB2JFIFYCC444(3MLIB)
