aom_dsp/blk_sse_sum.c

/*
 * 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/.
 */

#include "config/aom_dsp_rtcd.h"

void aom_get_blk_sse_sum_c(const int16_t *data, int stride, int bw, int bh,
                           int *x_sum, int64_t *x2_sum) {
  *x_sum = 0;
  *x2_sum = 0;
  for (int i = 0; i < bh; ++i) {
    for (int j = 0; j < bw; ++j) {
      const int val = data[j];
      *x_sum += val;
      *x2_sum += val * val;
    }
    data += stride;
  }
}