chromium/third_party/libaom/source/libaom/av1/encoder/x86/rdopt_avx2.c

/*
 * Copyright (c) 2018, 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 <immintrin.h>
#include "aom_dsp/x86/mem_sse2.h"
#include "aom_dsp/x86/synonyms_avx2.h"

#include "config/av1_rtcd.h"
#include "av1/encoder/rdopt.h"

// Process horizontal and vertical correlations in a 4x4 block of pixels.
// We actually use the 4x4 pixels to calculate correlations corresponding to
// the top-left 3x3 pixels, so this function must be called with 1x1 overlap,
// moving the window along/down by 3 pixels at a time.
static inline void horver_correlation_4x4(const int16_t *diff, int stride,
                                          __m256i *xy_sum_32,
                                          __m256i *xz_sum_32, __m256i *x_sum_32,
                                          __m256i *x2_sum_32) { … }

void av1_get_horver_correlation_full_avx2(const int16_t *diff, int stride,
                                          int width, int height, float *hcorr,
                                          float *vcorr) { … }