ref: 7c880906a0b4c7586ac167f13eb721548989061f
dir: /vpx_dsp/sum_squares.c/
/*
* Copyright (c) 2016 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "./vpx_dsp_rtcd.h"
uint64_t vpx_sum_squares_2d_i16_c(const int16_t *src, int stride, int size) {
int r, c;
uint64_t ss = 0;
for (r = 0; r < size; r++) {
for (c = 0; c < size; c++) {
const int16_t v = src[c];
ss += v * v;
}
src += stride;
}
return ss;
}