// This file is part of OpenCV project.
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// It is subject to the license terms in the LICENSE file found in the top-level directory
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// of this distribution and at http://opencv.org/license.html
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#ifndef OPENCV_HAL_INTRIN_SSE_EM_HPP
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#define OPENCV_HAL_INTRIN_SSE_EM_HPP
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namespace cv
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{
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//! @cond IGNORED
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CV_CPU_OPTIMIZATION_HAL_NAMESPACE_BEGIN
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#define OPENCV_HAL_SSE_WRAP_1(fun, tp) \
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inline tp _v128_##fun(const tp& a) \
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{ return _mm_##fun(a); }
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#define OPENCV_HAL_SSE_WRAP_2(fun, tp) \
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inline tp _v128_##fun(const tp& a, const tp& b) \
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{ return _mm_##fun(a, b); }
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#define OPENCV_HAL_SSE_WRAP_3(fun, tp) \
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inline tp _v128_##fun(const tp& a, const tp& b, const tp& c) \
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{ return _mm_##fun(a, b, c); }
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///////////////////////////// XOP /////////////////////////////
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// [todo] define CV_XOP
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#if 1 // CV_XOP
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inline __m128i _v128_comgt_epu32(const __m128i& a, const __m128i& b)
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{
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const __m128i delta = _mm_set1_epi32((int)0x80000000);
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return _mm_cmpgt_epi32(_mm_xor_si128(a, delta), _mm_xor_si128(b, delta));
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}
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// wrapping XOP
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#else
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OPENCV_HAL_SSE_WRAP_2(_v128_comgt_epu32, __m128i)
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#endif // !CV_XOP
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///////////////////////////// SSE4.1 /////////////////////////////
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#if !CV_SSE4_1
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/** Swizzle **/
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inline __m128i _v128_blendv_epi8(const __m128i& a, const __m128i& b, const __m128i& mask)
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{ return _mm_xor_si128(a, _mm_and_si128(_mm_xor_si128(b, a), mask)); }
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/** Convert **/
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// 8 >> 16
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inline __m128i _v128_cvtepu8_epi16(const __m128i& a)
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{
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const __m128i z = _mm_setzero_si128();
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return _mm_unpacklo_epi8(a, z);
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}
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inline __m128i _v128_cvtepi8_epi16(const __m128i& a)
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{ return _mm_srai_epi16(_mm_unpacklo_epi8(a, a), 8); }
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// 8 >> 32
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inline __m128i _v128_cvtepu8_epi32(const __m128i& a)
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{
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const __m128i z = _mm_setzero_si128();
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return _mm_unpacklo_epi16(_mm_unpacklo_epi8(a, z), z);
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}
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inline __m128i _v128_cvtepi8_epi32(const __m128i& a)
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{
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__m128i r = _mm_unpacklo_epi8(a, a);
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r = _mm_unpacklo_epi8(r, r);
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return _mm_srai_epi32(r, 24);
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}
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// 16 >> 32
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inline __m128i _v128_cvtepu16_epi32(const __m128i& a)
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{
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const __m128i z = _mm_setzero_si128();
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return _mm_unpacklo_epi16(a, z);
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}
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inline __m128i _v128_cvtepi16_epi32(const __m128i& a)
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{ return _mm_srai_epi32(_mm_unpacklo_epi16(a, a), 16); }
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// 32 >> 64
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inline __m128i _v128_cvtepu32_epi64(const __m128i& a)
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{
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const __m128i z = _mm_setzero_si128();
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return _mm_unpacklo_epi32(a, z);
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}
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inline __m128i _v128_cvtepi32_epi64(const __m128i& a)
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{ return _mm_unpacklo_epi32(a, _mm_srai_epi32(a, 31)); }
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/** Arithmetic **/
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inline __m128i _v128_mullo_epi32(const __m128i& a, const __m128i& b)
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{
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__m128i c0 = _mm_mul_epu32(a, b);
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__m128i c1 = _mm_mul_epu32(_mm_srli_epi64(a, 32), _mm_srli_epi64(b, 32));
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__m128i d0 = _mm_unpacklo_epi32(c0, c1);
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__m128i d1 = _mm_unpackhi_epi32(c0, c1);
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return _mm_unpacklo_epi64(d0, d1);
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}
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/** Math **/
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inline __m128i _v128_min_epu32(const __m128i& a, const __m128i& b)
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{ return _v128_blendv_epi8(a, b, _v128_comgt_epu32(a, b)); }
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// wrapping SSE4.1
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#else
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OPENCV_HAL_SSE_WRAP_1(cvtepu8_epi16, __m128i)
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OPENCV_HAL_SSE_WRAP_1(cvtepi8_epi16, __m128i)
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OPENCV_HAL_SSE_WRAP_1(cvtepu8_epi32, __m128i)
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OPENCV_HAL_SSE_WRAP_1(cvtepi8_epi32, __m128i)
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OPENCV_HAL_SSE_WRAP_1(cvtepu16_epi32, __m128i)
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OPENCV_HAL_SSE_WRAP_1(cvtepi16_epi32, __m128i)
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OPENCV_HAL_SSE_WRAP_1(cvtepu32_epi64, __m128i)
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OPENCV_HAL_SSE_WRAP_1(cvtepi32_epi64, __m128i)
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OPENCV_HAL_SSE_WRAP_2(min_epu32, __m128i)
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OPENCV_HAL_SSE_WRAP_2(mullo_epi32, __m128i)
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OPENCV_HAL_SSE_WRAP_3(blendv_epi8, __m128i)
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#endif // !CV_SSE4_1
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///////////////////////////// Revolutionary /////////////////////////////
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/** Convert **/
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// 16 << 8
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inline __m128i _v128_cvtepu8_epi16_high(const __m128i& a)
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{
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const __m128i z = _mm_setzero_si128();
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return _mm_unpackhi_epi8(a, z);
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}
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inline __m128i _v128_cvtepi8_epi16_high(const __m128i& a)
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{ return _mm_srai_epi16(_mm_unpackhi_epi8(a, a), 8); }
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// 32 << 16
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inline __m128i _v128_cvtepu16_epi32_high(const __m128i& a)
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{
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const __m128i z = _mm_setzero_si128();
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return _mm_unpackhi_epi16(a, z);
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}
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inline __m128i _v128_cvtepi16_epi32_high(const __m128i& a)
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{ return _mm_srai_epi32(_mm_unpackhi_epi16(a, a), 16); }
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// 64 << 32
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inline __m128i _v128_cvtepu32_epi64_high(const __m128i& a)
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{
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const __m128i z = _mm_setzero_si128();
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return _mm_unpackhi_epi32(a, z);
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}
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inline __m128i _v128_cvtepi32_epi64_high(const __m128i& a)
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{ return _mm_unpackhi_epi32(a, _mm_srai_epi32(a, 31)); }
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/** Miscellaneous **/
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inline __m128i _v128_packs_epu32(const __m128i& a, const __m128i& b)
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{
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const __m128i m = _mm_set1_epi32(65535);
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__m128i am = _v128_min_epu32(a, m);
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__m128i bm = _v128_min_epu32(b, m);
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#if CV_SSE4_1
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return _mm_packus_epi32(am, bm);
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#else
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const __m128i d = _mm_set1_epi32(32768), nd = _mm_set1_epi16(-32768);
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am = _mm_sub_epi32(am, d);
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bm = _mm_sub_epi32(bm, d);
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am = _mm_packs_epi32(am, bm);
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return _mm_sub_epi16(am, nd);
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#endif
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}
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CV_CPU_OPTIMIZATION_HAL_NAMESPACE_END
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//! @endcond
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} // cv::
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#endif // OPENCV_HAL_INTRIN_SSE_EM_HPP
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