aom_dsp/blk_sse_sum.c

   1 /*
   2  * Copyright (c) 2019, Alliance for Open Media. All rights reserved
   3  *
   4  * This source code is subject to the terms of the BSD 2 Clause License and
   5  * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
   6  * was not distributed with this source code in the LICENSE file, you can
   7  * obtain it at www.aomedia.org/license/software. If the Alliance for Open
   8  * Media Patent License 1.0 was not distributed with this source code in the
   9  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
  10  */
  11
  12 #include "config/aom_dsp_rtcd.h"
  13
  14 void aom_get_blk_sse_sum_c(const int16_t *data, int stride, int bw, int bh,
  15                            int *x_sum, int64_t *x2_sum) {
  16   *x_sum = 0;
  17   *x2_sum = 0;
  18   for (int i = 0; i < bh; ++i) {
  19     for (int j = 0; j < bw; ++j) {
  20       const int val = data[j];
  21       *x_sum += val;
  22       *x2_sum += val * val;
  23     }
  24     data += stride;
  25   }
  26 }