ref: e5e7013b73a1d07d86e10e1f44356a8fb35705b3
dir: /codec/common/src/intra_pred_common.cpp/
/*!
* \copy
* Copyright (c) 2009-2013, Cisco Systems
* All rights reserved.
*
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*
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*
* \file get_intra_predictor.c
*
* \brief implementation for get intra predictor about 16x16, 4x4, chroma.
*
* \date 4/2/2009 Created
* 9/14/2009 C level based optimization with high performance gained.
* [const, using ST32/ST64 to replace memset, memcpy and memmove etc.]
*
*************************************************************************************
*/
#include "ls_defines.h"
#include "cpu_core.h"
#include "intra_pred_common.h"
void WelsI16x16LumaPredV_c (uint8_t* pPred, uint8_t* pRef, const int32_t kiStride) {
uint8_t i = 15;
const int8_t* kpSrc = (int8_t*)&pRef[-kiStride];
const uint64_t kuiT1 = LD64 (kpSrc);
const uint64_t kuiT2 = LD64 (kpSrc + 8);
uint8_t* pDst = pPred;
do {
ST64 (pDst , kuiT1);
ST64 (pDst + 8, kuiT2);
pDst += 16;
} while (i-- > 0);
}
void WelsI16x16LumaPredH_c (uint8_t* pPred, uint8_t* pRef, const int32_t kiStride) {
int32_t iStridex15 = (kiStride << 4) - kiStride;
int32_t iPredStride = 16;
int32_t iPredStridex15 = 240; //(iPredStride<<4)-iPredStride;
uint8_t i = 15;
do {
const uint8_t kuiSrc8 = pRef[iStridex15 - 1];
const uint64_t kuiV64 = (uint64_t) (0x0101010101010101ULL * kuiSrc8);
ST64 (&pPred[iPredStridex15], kuiV64);
ST64 (&pPred[iPredStridex15 + 8], kuiV64);
iStridex15 -= kiStride;
iPredStridex15 -= iPredStride;
} while (i-- > 0);
}