78 строки
3.3 KiB
C
78 строки
3.3 KiB
C
/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#include <assert.h>
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#include "./aom_config.h"
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#include "./aom_dsp_rtcd.h"
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#include "aom/aom_integer.h"
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void aom_half_horiz_vert_variance16x_h_sse2(const unsigned char *ref,
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int ref_stride,
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const unsigned char *src,
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int src_stride, unsigned int height,
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int *sum, unsigned int *sumsquared);
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void aom_half_horiz_variance16x_h_sse2(const unsigned char *ref, int ref_stride,
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const unsigned char *src, int src_stride,
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unsigned int height, int *sum,
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unsigned int *sumsquared);
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void aom_half_vert_variance16x_h_sse2(const unsigned char *ref, int ref_stride,
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const unsigned char *src, int src_stride,
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unsigned int height, int *sum,
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unsigned int *sumsquared);
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uint32_t aom_variance_halfpixvar16x16_h_sse2(const unsigned char *src,
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int src_stride,
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const unsigned char *dst,
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int dst_stride, uint32_t *sse) {
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int xsum0;
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unsigned int xxsum0;
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aom_half_horiz_variance16x_h_sse2(src, src_stride, dst, dst_stride, 16,
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&xsum0, &xxsum0);
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*sse = xxsum0;
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assert(xsum0 <= 255 * 16 * 16);
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assert(xsum0 >= -255 * 16 * 16);
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return (xxsum0 - ((uint32_t)((int64_t)xsum0 * xsum0) >> 8));
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}
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uint32_t aom_variance_halfpixvar16x16_v_sse2(const unsigned char *src,
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int src_stride,
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const unsigned char *dst,
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int dst_stride, uint32_t *sse) {
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int xsum0;
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unsigned int xxsum0;
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aom_half_vert_variance16x_h_sse2(src, src_stride, dst, dst_stride, 16, &xsum0,
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&xxsum0);
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*sse = xxsum0;
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assert(xsum0 <= 255 * 16 * 16);
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assert(xsum0 >= -255 * 16 * 16);
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return (xxsum0 - ((uint32_t)((int64_t)xsum0 * xsum0) >> 8));
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}
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uint32_t aom_variance_halfpixvar16x16_hv_sse2(const unsigned char *src,
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int src_stride,
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const unsigned char *dst,
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int dst_stride, uint32_t *sse) {
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int xsum0;
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unsigned int xxsum0;
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aom_half_horiz_vert_variance16x_h_sse2(src, src_stride, dst, dst_stride, 16,
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&xsum0, &xxsum0);
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*sse = xxsum0;
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assert(xsum0 <= 255 * 16 * 16);
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assert(xsum0 >= -255 * 16 * 16);
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return (xxsum0 - ((uint32_t)((int64_t)xsum0 * xsum0) >> 8));
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}
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