Evaluate mean and variance, 8x8 block
SSE2
| FwStatus | fwiVarMean8x8_8u32s_C1R | ( | const Fw8u * pSrc, Fw32s srcStep, Fw32s * pVar, Fw32s * pMean ); | |
| FwStatus | fwiVarMean8x8_16s32s_C1R | ( | const Fw16s * pSrc, Fw32s srcStep, Fw32s * pVar, Fw32s * pMean ); |
| pMean | Pointer to a computed mean of pixel values. | |
| pSrc | Pointer to a block of DCT coefficients. | |
| pVar | Pointer to a variance value. | |
| srcStep | Source buffer step size (width of the buffer in bytes). |
The unsigned 8-bit version of this function evaluates the mean and variance of an 8x8 block of unsigned char values.
The signed 16-bit version evaluates the mean and variance of an 8x8 block of shor integer values.
Results are written to locations specified by pVar and pMean.