Visible to Intel only — GUID: GUID-B0718764-E7FE-45E5-9EDE-8F507D13E3EC
Visible to Intel only — GUID: GUID-B0718764-E7FE-45E5-9EDE-8F507D13E3EC
YCbCr420ToBGR_709CSC
Converts a YCbCr image with 4:2:0 sampling to the BGR image for ITU-R BT.709 CSC signal.
Syntax
IppStatus ippiYCbCr420ToBGR_709CSC_8u_P3C3R(const Ipp8u* pSrc[3], int srcStep[3], Ipp8u* pDst, int dstStep, IppiSize roiSize);
Include Files
ippcc.h
Domain Dependencies
Headers: ippcore.h, ippvm.h, ipps.h, ippi.h
Libraries: ippcore.lib, ippvm.lib, ipps.lib, ippi.lib
Parameters
pSrc |
An array of pointers to ROI in separate planes of the source image. |
srcStep |
An array of distances in bytes between starts of consecutive lines in the source image planes. |
pDst |
Pointer to the destination image ROI. |
dstStep |
Distance in bytes between starts of consecutive lines in the destination image. |
roiSize |
Size of the source and destination ROI in pixels. |
Description
This function operates with ROI (see Regions of Interest in Intel IPP).
This function converts a planar Y'Cb'Cr' image pSrc to the three-channel gamma-corrected B'G'R' image pDst for digital component video signals complied with the ITU-R BT.709 Recommendation [ITU709] for computer systems consideration (CSC). The conversion is performed according to the following formulas [Jack01]:
R' = 1.164*(Y' - 16) + 1.793*(Cr' - 128)
G' = 1.164*(Y' - 16) - 0.534*(Cr' - 128) - 0.213*(Cb' - 128)
B' = 1.164*(Y' - 16) + 2.115*(Cb' - 128)
The output R'G'B' values are saturated to the range [0..255]. The source image pDst has the 4:2:0 sampling format (see Table “Planar Image Formats” for more details).
The values of roiSize.width and roiSize.height should be multiples of 2. Otherwise, the function reduces their original values to the nearest multiples of 2, performs the operation, and returns a warning message.
Return Values
ippStsNoErr |
Indicates no error. Any other value indicates an error or a warning. |
ippStsNullPtrErr |
Indicates an error condition if pSrc or pDst is NULL. |
ippStsSizeErr |
Indicates an error condition if roiSize has a field with a zero or negative value. |
ippStsDoubleSize |
Indicates a warning if roiSize has a field that is not a multiple of 2. |