90 lines
3.5 KiB
C
90 lines
3.5 KiB
C
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/*
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* Copyright (c) 2017, 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 <emmintrin.h>
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#include "av1/common/cfl.h"
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#include "config/av1_rtcd.h"
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static INLINE __m128i fill_sum_epi32(__m128i l0) {
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l0 = _mm_add_epi32(l0, _mm_shuffle_epi32(l0, _MM_SHUFFLE(1, 0, 3, 2)));
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return _mm_add_epi32(l0, _mm_shuffle_epi32(l0, _MM_SHUFFLE(2, 3, 0, 1)));
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}
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static INLINE void subtract_average_sse2(const uint16_t *src_ptr,
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int16_t *dst_ptr, int width,
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int height, int round_offset,
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int num_pel_log2) {
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const __m128i zeros = _mm_setzero_si128();
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const __m128i round_offset_epi32 = _mm_set1_epi32(round_offset);
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const __m128i *src = (__m128i *)src_ptr;
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const __m128i *const end = src + height * CFL_BUF_LINE_I128;
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const int step = CFL_BUF_LINE_I128 * (1 + (width == 8) + 3 * (width == 4));
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__m128i sum = zeros;
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do {
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__m128i l0;
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if (width == 4) {
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l0 = _mm_add_epi16(_mm_loadl_epi64(src),
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_mm_loadl_epi64(src + CFL_BUF_LINE_I128));
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__m128i l1 = _mm_add_epi16(_mm_loadl_epi64(src + 2 * CFL_BUF_LINE_I128),
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_mm_loadl_epi64(src + 3 * CFL_BUF_LINE_I128));
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sum = _mm_add_epi32(sum, _mm_add_epi32(_mm_unpacklo_epi16(l0, zeros),
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_mm_unpacklo_epi16(l1, zeros)));
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} else {
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if (width == 8) {
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l0 = _mm_add_epi16(_mm_loadu_si128(src),
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_mm_loadu_si128(src + CFL_BUF_LINE_I128));
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} else {
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l0 = _mm_add_epi16(_mm_loadu_si128(src), _mm_loadu_si128(src + 1));
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}
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sum = _mm_add_epi32(sum, _mm_add_epi32(_mm_unpacklo_epi16(l0, zeros),
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_mm_unpackhi_epi16(l0, zeros)));
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if (width == 32) {
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l0 = _mm_add_epi16(_mm_loadu_si128(src + 2), _mm_loadu_si128(src + 3));
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sum = _mm_add_epi32(sum, _mm_add_epi32(_mm_unpacklo_epi16(l0, zeros),
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_mm_unpackhi_epi16(l0, zeros)));
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}
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}
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src += step;
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} while (src < end);
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sum = fill_sum_epi32(sum);
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__m128i avg_epi16 =
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_mm_srli_epi32(_mm_add_epi32(sum, round_offset_epi32), num_pel_log2);
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avg_epi16 = _mm_packs_epi32(avg_epi16, avg_epi16);
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src = (__m128i *)src_ptr;
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__m128i *dst = (__m128i *)dst_ptr;
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do {
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if (width == 4) {
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_mm_storel_epi64(dst, _mm_sub_epi16(_mm_loadl_epi64(src), avg_epi16));
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} else {
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_mm_storeu_si128(dst, _mm_sub_epi16(_mm_loadu_si128(src), avg_epi16));
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if (width > 8) {
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_mm_storeu_si128(dst + 1,
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_mm_sub_epi16(_mm_loadu_si128(src + 1), avg_epi16));
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if (width == 32) {
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_mm_storeu_si128(dst + 2,
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_mm_sub_epi16(_mm_loadu_si128(src + 2), avg_epi16));
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_mm_storeu_si128(dst + 3,
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_mm_sub_epi16(_mm_loadu_si128(src + 3), avg_epi16));
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}
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}
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}
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src += CFL_BUF_LINE_I128;
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dst += CFL_BUF_LINE_I128;
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} while (src < end);
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}
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CFL_SUB_AVG_FN(sse2)
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