/*!

 * \copy

 *     Copyright (c)  2009-2013, Cisco Systems

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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);

}