Convert 16-bit per pixel CbYCr with 4:2:2 sampling to BGR
| FwStatus | fwiCbYCr422ToBGR_8u_C2C4R | ( | const Fw8u * pSrc, int srcStep, Fw8u * pDst, int dstStep, FwiSize roiSize, Fw8u alpha ); |
| alpha | Alpha (RGBA transparency) constant value. | |
| dstStep | Destination buffer step size (width of the buffer in bytes). | |
| pDst | Pointer to a location in a destination buffer. | |
| pSrc | Pointer to a location in a source buffer. | |
| roiSize | Specifies the height and width of an ROI. | |
| srcStep | Source buffer step size (width of the buffer in bytes). |
This function steps through an ROI in a source buffer, converts the source data from the CbYCr color space with 4:2:2 chroma subsampling to the BGR model, and writes the converted data to a destination buffer.
A 16-bit per pixel CbYCr image with 4:2:2 chroma subsampling (pSrc) is converted to a gamma-corrected BGR image (pDst).
The following conversion formulas are used:
R = 1.164*(Y-16) + 1.596*(Cr-128) G = 1.164*(Y-16) - 0.392*(Cb-128) - 0.813*(Cr-128) B = 1.164*(Y-16) + 2.017*(Cb-128)