shithub: openh264

ref: 4c1642a6dc0b8121b3691625427ba0bc82c40e88
dir: /codec/common/src/intra_pred_common.cpp/

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/*!
 * \copy
 *     Copyright (c)  2009-2013, Cisco Systems
 *     All rights reserved.
 *
 *     Redistribution and use in source and binary forms, with or without
 *     modification, are permitted provided that the following conditions
 *     are met:
 *
 *        * Redistributions of source code must retain the above copyright
 *          notice, this list of conditions and the following disclaimer.
 *
 *        * Redistributions in binary form must reproduce the above copyright
 *          notice, this list of conditions and the following disclaimer in
 *          the documentation and/or other materials provided with the
 *          distribution.
 *
 *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *     "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *     LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 *     FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *     COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 *     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 *     BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 *     CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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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);
}