Coverage Report

Created: 2025-06-13 07:07

/src/aom/aom_dsp/x86/convolve_ssse3.h
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/*
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 * Copyright (c) 2021, 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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#ifndef AOM_AOM_DSP_X86_CONVOLVE_SSSE3_H_
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#define AOM_AOM_DSP_X86_CONVOLVE_SSSE3_H_
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#include <tmmintrin.h>  // SSSE3
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static inline void shuffle_filter_ssse3(const int16_t *const filter,
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                                        __m128i *const f) {
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  const __m128i f_values = _mm_load_si128((const __m128i *)filter);
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  // pack and duplicate the filter values
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  f[0] = _mm_shuffle_epi8(f_values, _mm_set1_epi16(0x0200u));
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  f[1] = _mm_shuffle_epi8(f_values, _mm_set1_epi16(0x0604u));
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  f[2] = _mm_shuffle_epi8(f_values, _mm_set1_epi16(0x0a08u));
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  f[3] = _mm_shuffle_epi8(f_values, _mm_set1_epi16(0x0e0cu));
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}
Unexecuted instantiation: aom_subpixel_8t_intrin_ssse3.c:shuffle_filter_ssse3
Unexecuted instantiation: resize_ssse3.c:shuffle_filter_ssse3
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static inline __m128i convolve8_8_ssse3(const __m128i *const s,
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                                        const __m128i *const f) {
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  // multiply 2 adjacent elements with the filter and add the result
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  const __m128i k_64 = _mm_set1_epi16(1 << 6);
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  const __m128i x0 = _mm_maddubs_epi16(s[0], f[0]);
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  const __m128i x1 = _mm_maddubs_epi16(s[1], f[1]);
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  const __m128i x2 = _mm_maddubs_epi16(s[2], f[2]);
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  const __m128i x3 = _mm_maddubs_epi16(s[3], f[3]);
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  __m128i sum1, sum2;
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  // sum the results together, saturating only on the final step
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  // adding x0 with x2 and x1 with x3 is the only order that prevents
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  // outranges for all filters
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  sum1 = _mm_add_epi16(x0, x2);
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  sum2 = _mm_add_epi16(x1, x3);
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  // add the rounding offset early to avoid another saturated add
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  sum1 = _mm_add_epi16(sum1, k_64);
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  sum1 = _mm_adds_epi16(sum1, sum2);
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  // shift by 7 bit each 16 bit
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  sum1 = _mm_srai_epi16(sum1, 7);
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  return sum1;
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}
Unexecuted instantiation: aom_subpixel_8t_intrin_ssse3.c:convolve8_8_ssse3
Unexecuted instantiation: resize_ssse3.c:convolve8_8_ssse3
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#endif  // AOM_AOM_DSP_X86_CONVOLVE_SSSE3_H_