aom/aom_dsp/sum_squares.c

41 строка
1.0 KiB
C

/*
* 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.
*/
#include <assert.h>
#include "./aom_dsp_rtcd.h"
uint64_t aom_sum_squares_2d_i16_c(const int16_t *src, int src_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 += src_stride;
}
return ss;
}
uint64_t aom_sum_squares_i16_c(const int16_t *src, uint32_t n) {
uint64_t ss = 0;
do {
const int16_t v = *src++;
ss += v * v;
} while (--n);
return ss;
}