aom_dsp/x86/intrapred_x86.h

/*
 * Copyright (c) 2021, Alliance for Open Media. All rights reserved
 *
 * This source code is subject to the terms of the BSD 3-Clause Clear License
 * and the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear
 * License was not distributed with this source code in the LICENSE file, you
 * can obtain it at aomedia.org/license/software-license/bsd-3-c-c/.  If the
 * Alliance for Open Media Patent License 1.0 was not distributed with this
 * source code in the PATENTS file, you can obtain it at
 * aomedia.org/license/patent-license/.
 */

#ifndef AOM_AOM_DSP_X86_INTRAPRED_X86_H_
#define AOM_AOM_DSP_X86_INTRAPRED_X86_H_

#include <emmintrin.h>  // SSE2
#include "aom/aom_integer.h"
#include "config/aom_config.h"

static INLINE __m128i dc_sum_16_sse2(const uint8_t *ref) {
  __m128i x = _mm_load_si128((__m128i const *)ref);
  const __m128i zero = _mm_setzero_si128();
  x = _mm_sad_epu8(x, zero);
  const __m128i high = _mm_unpackhi_epi64(x, x);
  return _mm_add_epi16(x, high);
}

static INLINE __m128i dc_sum_32_sse2(const uint8_t *ref) {
  __m128i x0 = _mm_load_si128((__m128i const *)ref);
  __m128i x1 = _mm_load_si128((__m128i const *)(ref + 16));
  const __m128i zero = _mm_setzero_si128();
  x0 = _mm_sad_epu8(x0, zero);
  x1 = _mm_sad_epu8(x1, zero);
  x0 = _mm_add_epi16(x0, x1);
  const __m128i high = _mm_unpackhi_epi64(x0, x0);
  return _mm_add_epi16(x0, high);
}

#endif  // AOM_AOM_DSP_X86_INTRAPRED_X86_H_