Convert from YCbCr with 4:1:1 sampling to BGR
| FwStatus | fwiYCbCr411ToBGR_8u_P3C3R | ( | const Fw8u * const pSrc[3], int srcStep[3], Fw8u * pDst, int dstStep, FwiSize roiSize ); | |
| FwStatus | fwiYCbCr411ToBGR_8u_P3C4R | ( | const Fw8u * const pSrc[3], int srcStep[3], 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[3] | Pointer to a location in a three-channel planar source buffer (array values point to a location in each plane). | |
| roiSize | Specifies the height and width of an ROI. | |
| srcStep[3] | Source three-channel planar buffer step size (array values define width of each plane in bytes). |
These functions step through an ROI in a source buffer, convert the source data from the YCbCr color space with 4:1:1 chroma subsampling to the BGR color model, and write the converted data to a destination buffer.
A YCbCr image with 4:1:1 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)