40 строки
946 B
C
40 строки
946 B
C
/*
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* Copyright (c) 2015 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <assert.h>
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#include "./vpx_dsp_rtcd.h"
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uint64_t vpx_sum_squares_2d_i16_c(const int16_t *src, int src_stride,
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int size) {
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int r, c;
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uint64_t ss = 0;
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for (r = 0; r < size; r++) {
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for (c = 0; c < size; c++) {
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const int16_t v = src[c];
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ss += v * v;
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}
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src += src_stride;
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}
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return ss;
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}
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uint64_t vpx_sum_squares_i16_c(const int16_t *src, uint32_t n) {
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uint64_t ss = 0;
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do {
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const int16_t v = *src++;
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ss += v * v;
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} while (--n);
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return ss;
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}
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