Performs intra prediction for a 16x16 luma component.
Syntax
IppStatus ippiPredictIntra_16x16_H264_8u_C1IR(Ipp8u* pSrcDst, Ipp32s srcdstStep, IppIntra16x16PredMode predMode, Ipp32s availability);
Parameters
pSrcDst |
Pointer to the destination array. |
srcdstStep |
Distance in bytes between starts of the consecutive lines in the destination array. |
predMode |
Prediction mode of the Intra_16x16 prediction process for luma samples. |
availability |
Flag that specifies the availability of the macroblocks used for prediction. |
Description
The function ippiPredictIntra_16x16_H264_8u_C1IR is declared in the ippvc.h file. This function performs intra prediction for a 16x16 luma component in accordance with 8.3.2 of [JVTG050] in a given prediction mode predMode (See enumeration IppIntra16x16PredMode).
The flag availability is computed as follows:
B1*IPP_LEFT + B2*IPP_UPPER_LEFT + B3*IPP_UPPER,
where the constants IPP_LEFT, IPP_UPPER_LEFT, IPP_UPPER are from IppLayoutFlag and the variables B1, B2, B3 may take the values of
0 - |
if the macroblock is unavailable for 16x16 prediction, |
1 - |
if the macroblock is available for 16x16 prediction. |
Return Values
ippStsNoErr |
Indicates no error. |
ippStsNullPtrErr |
Indicates an error condition if at least one of the specified pointers is NULL. |
ippStsStepErr |
Indicates an error condition if srcdstStep value is less than 16. |
ippStsOutOfRangeErr |
Indicates an error condition if predMode value falls outside [0,3]. |
ippStsLPCCalcErr |
Indicates an error condition if predMode is not allowed for this block. |