89 lines
3.9 KiB
C
89 lines
3.9 KiB
C
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/*
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* Copyright (c) 2018 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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#ifndef VPX_VPX_DSP_X86_CONVOLVE_SSE2_H_
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#define VPX_VPX_DSP_X86_CONVOLVE_SSE2_H_
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#include <emmintrin.h> // SSE2
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#include "./vpx_config.h"
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// Interprets the input register as 16-bit words 7 6 5 4 3 2 1 0, then returns
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// values at index 2 and 3 to return 3 2 3 2 3 2 3 2 as 16-bit words
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static INLINE __m128i extract_quarter_2_epi16_sse2(const __m128i *const reg) {
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__m128i tmp = _mm_unpacklo_epi32(*reg, *reg);
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return _mm_unpackhi_epi64(tmp, tmp);
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}
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// Interprets the input register as 16-bit words 7 6 5 4 3 2 1 0, then returns
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// values at index 2 and 3 to return 5 4 5 4 5 4 5 4 as 16-bit words.
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static INLINE __m128i extract_quarter_3_epi16_sse2(const __m128i *const reg) {
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__m128i tmp = _mm_unpackhi_epi32(*reg, *reg);
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return _mm_unpacklo_epi64(tmp, tmp);
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}
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// Interprets src as 8-bit words, zero extends to form 16-bit words, then
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// multiplies with ker and add the adjacent results to form 32-bit words.
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// Finally adds the result from 1 and 2 together.
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static INLINE __m128i mm_madd_add_epi8_sse2(const __m128i *const src_1,
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const __m128i *const src_2,
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const __m128i *const ker_1,
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const __m128i *const ker_2) {
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const __m128i src_1_half = _mm_unpacklo_epi8(*src_1, _mm_setzero_si128());
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const __m128i src_2_half = _mm_unpacklo_epi8(*src_2, _mm_setzero_si128());
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const __m128i madd_1 = _mm_madd_epi16(src_1_half, *ker_1);
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const __m128i madd_2 = _mm_madd_epi16(src_2_half, *ker_2);
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return _mm_add_epi32(madd_1, madd_2);
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}
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// Interprets src as 16-bit words, then multiplies with ker and add the
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// adjacent results to form 32-bit words. Finally adds the result from 1 and 2
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// together.
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static INLINE __m128i mm_madd_add_epi16_sse2(const __m128i *const src_1,
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const __m128i *const src_2,
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const __m128i *const ker_1,
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const __m128i *const ker_2) {
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const __m128i madd_1 = _mm_madd_epi16(*src_1, *ker_1);
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const __m128i madd_2 = _mm_madd_epi16(*src_2, *ker_2);
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return _mm_add_epi32(madd_1, madd_2);
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}
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static INLINE __m128i mm_madd_packs_epi16_sse2(const __m128i *const src_0,
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const __m128i *const src_1,
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const __m128i *const ker) {
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const __m128i madd_1 = _mm_madd_epi16(*src_0, *ker);
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const __m128i madd_2 = _mm_madd_epi16(*src_1, *ker);
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return _mm_packs_epi32(madd_1, madd_2);
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}
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// Interleaves src_1 and src_2
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static INLINE __m128i mm_zip_epi32_sse2(const __m128i *const src_1,
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const __m128i *const src_2) {
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const __m128i tmp_1 = _mm_unpacklo_epi32(*src_1, *src_2);
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const __m128i tmp_2 = _mm_unpackhi_epi32(*src_1, *src_2);
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return _mm_packs_epi32(tmp_1, tmp_2);
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}
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static INLINE __m128i mm_round_epi32_sse2(const __m128i *const src,
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const __m128i *const half_depth,
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const int depth) {
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const __m128i nearest_src = _mm_add_epi32(*src, *half_depth);
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return _mm_srai_epi32(nearest_src, depth);
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}
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static INLINE __m128i mm_round_epi16_sse2(const __m128i *const src,
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const __m128i *const half_depth,
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const int depth) {
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const __m128i nearest_src = _mm_adds_epi16(*src, *half_depth);
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return _mm_srai_epi16(nearest_src, depth);
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}
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#endif // VPX_VPX_DSP_X86_CONVOLVE_SSE2_H_
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