Name | Synopsis | Description | Parameters | Return Values | Attributes | See Also
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);
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
The function takes the following arguments:
Pointer to destination CMYK multi-component row. cmyk must be 8-byte aligned.
Pointer to source Y component row. y must be 8-byte aligned.
Pointer to source Cb component row. cb must be 8-byte aligned.
Pointer to source Cr component row. cr must be 8-byte aligned.
Pointer to source K component row. k 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