aom_dsp/x86/txfm_common_sse2.h

/*
 * Copyright (c) 2016, Alliance for Open Media. All rights reserved
 *
 * This source code is subject to the terms of the BSD 2 Clause License and
 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
 * was not distributed with this source code in the LICENSE file, you can
 * obtain it at www.aomedia.org/license/software. 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 www.aomedia.org/license/patent.
 */

#ifndef AOM_AOM_DSP_X86_TXFM_COMMON_SSE2_H_
#define AOM_AOM_DSP_X86_TXFM_COMMON_SSE2_H_

#include <emmintrin.h>
#include "aom/aom_integer.h"
#include "aom_dsp/x86/synonyms.h"

#define pair_set_epi16(a, b) \
  _mm_set1_epi32((int32_t)(((uint16_t)(a)) | (((uint32_t)(b)) << 16)))

// Reverse the 8 16 bit words in __m128i
static INLINE __m128i mm_reverse_epi16(const __m128i x) {
  const __m128i a = _mm_shufflelo_epi16(x, 0x1b);
  const __m128i b = _mm_shufflehi_epi16(a, 0x1b);
  return _mm_shuffle_epi32(b, 0x4e);
}

#endif  // AOM_AOM_DSP_X86_TXFM_COMMON_SSE2_H_