Name | Synopsis | Description | Parameters | Return Values | Attributes | See Also
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);
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
The function takes the following arguments:
Pointer to destination Y component row. y must be 8-byte aligned.
Pointer to destination Cb component row. cb must be 8-byte aligned.
Pointer to destination Cr component row. cr must be 8-byte aligned.
Pointer to destination K component row. k must be 8-byte aligned.
Pointer to source CMYK multi-component row. cmyk must be 8-byte aligned.
Length of Y,Cb,Cr, and K component rows. The length of the CMYK multi-component row must be 4*n.
The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.
See attributes(5) for descriptions of the following attributes:
ATTRIBUTE TYPE |
ATTRIBUTE VALUE |
---|---|
Interface Stability |
Committed |
MT-Level |
MT-Safe |
Name | Synopsis | Description | Parameters | Return Values | Attributes | See Also