highbd_rdopt_neon.c

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/*

 * Copyright (c) 2023, 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.

*/

#include <assert.h>

#include <arm_neon.h>

#include "config/av1_rtcd.h"

#include "aom_dsp/arm/sum_neon.h"

int64_t av1_highbd_block_error_neon(const tran_low_t *coeff,

                                    const tran_low_t *dqcoeff,

                                    intptr_t block_size, int64_t *ssz, int bd) {

  uint64x2_t err_u64 = vdupq_n_u64(0);

  int64x2_t ssz_s64 = vdupq_n_s64(0);

  const int shift = 2 * (bd - 8);

  const int rounding = (1 << shift) >> 1;

  assert(block_size >= 16);

  assert((block_size % 16) == 0);

  do {

    const int32x4_t c = vld1q_s32(coeff);

    const int32x4_t d = vld1q_s32(dqcoeff);

    const uint32x4_t diff = vreinterpretq_u32_s32(vabdq_s32(c, d));

    err_u64 = vmlal_u32(err_u64, vget_low_u32(diff), vget_low_u32(diff));

    err_u64 = vmlal_u32(err_u64, vget_high_u32(diff), vget_high_u32(diff));

    ssz_s64 = vmlal_s32(ssz_s64, vget_low_s32(c), vget_low_s32(c));

    ssz_s64 = vmlal_s32(ssz_s64, vget_high_s32(c), vget_high_s32(c));

    coeff += 4;

    dqcoeff += 4;

    block_size -= 4;

  } while (block_size != 0);

  *ssz = (horizontal_add_s64x2(ssz_s64) + rounding) >> shift;

  return ((int64_t)horizontal_add_u64x2(err_u64) + rounding) >> shift;