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145 lines
6.7 KiB
C++
145 lines
6.7 KiB
C++
//
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// Copyright 2012-2013 Ettus Research LLC
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// Copyright 2018 Ettus Research, a National Instruments Company
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//
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// SPDX-License-Identifier: GPL-3.0-or-later
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//
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#include "convert_common.hpp"
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#include <uhd/utils/byteswap.hpp>
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#include <emmintrin.h>
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using namespace uhd::convert;
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static const __m128i zeroi = _mm_setzero_si128();
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UHD_INLINE void unpack_sc32_8x(const __m128i& in,
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__m128d& out0,
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__m128d& out1,
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__m128d& out2,
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__m128d& out3,
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__m128d& out4,
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__m128d& out5,
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__m128d& out6,
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__m128d& out7,
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const __m128d& scalar)
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{
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const int shuf = _MM_SHUFFLE(1, 0, 3, 2);
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__m128i tmp;
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const __m128i tmplo = _mm_unpacklo_epi8(zeroi, in); /* value in upper 8 bits */
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tmp = _mm_unpacklo_epi16(zeroi, tmplo); /* value in upper 16 bits */
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out0 = _mm_mul_pd(_mm_cvtepi32_pd(tmp), scalar);
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tmp = _mm_shuffle_epi32(tmp, shuf);
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out1 = _mm_mul_pd(_mm_cvtepi32_pd(tmp), scalar);
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tmp = _mm_unpackhi_epi16(zeroi, tmplo);
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out2 = _mm_mul_pd(_mm_cvtepi32_pd(tmp), scalar);
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tmp = _mm_shuffle_epi32(tmp, shuf);
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out3 = _mm_mul_pd(_mm_cvtepi32_pd(tmp), scalar);
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const __m128i tmphi = _mm_unpackhi_epi8(zeroi, in);
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tmp = _mm_unpacklo_epi16(zeroi, tmphi);
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out4 = _mm_mul_pd(_mm_cvtepi32_pd(tmp), scalar);
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tmp = _mm_shuffle_epi32(tmp, shuf);
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out5 = _mm_mul_pd(_mm_cvtepi32_pd(tmp), scalar);
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tmp = _mm_unpackhi_epi16(zeroi, tmphi);
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out6 = _mm_mul_pd(_mm_cvtepi32_pd(tmp), scalar);
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tmp = _mm_shuffle_epi32(tmp, shuf);
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out7 = _mm_mul_pd(_mm_cvtepi32_pd(tmp), scalar);
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}
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DECLARE_CONVERTER(sc8_item32_be, 1, fc64, 1, PRIORITY_SIMD)
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{
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const item32_t* input = reinterpret_cast<const item32_t*>(size_t(inputs[0]) & ~0x3);
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fc64_t* output = reinterpret_cast<fc64_t*>(outputs[0]);
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const __m128d scalar = _mm_set1_pd(scale_factor / (1 << 24));
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size_t i = 0, j = 0;
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fc32_t dummy;
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size_t num_samps = nsamps;
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if ((size_t(inputs[0]) & 0x3) != 0) {
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item32_sc8_to_xx<uhd::ntohx>(input++, output++, 1, scale_factor);
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num_samps--;
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}
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#define convert_sc8_item32_1_to_fc64_1_bswap_guts(_al_) \
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for (; j + 7 < num_samps; j += 8, i += 4) { \
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/* load from input */ \
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__m128i tmpi = _mm_loadu_si128(reinterpret_cast<const __m128i*>(input + i)); \
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\
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/* unpack */ \
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__m128d tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7; \
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unpack_sc32_8x(tmpi, tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, scalar); \
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\
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/* store to output */ \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + j + 0), tmp0); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + j + 1), tmp1); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + j + 2), tmp2); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + j + 3), tmp3); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + j + 4), tmp4); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + j + 5), tmp5); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + j + 6), tmp6); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + j + 7), tmp7); \
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}
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// dispatch according to alignment
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if ((size_t(output) & 0xf) == 0) {
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convert_sc8_item32_1_to_fc64_1_bswap_guts(_)
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} else {
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convert_sc8_item32_1_to_fc64_1_bswap_guts(u_)
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}
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// convert remainder
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item32_sc8_to_xx<uhd::ntohx>(input + i, output + j, num_samps - j, scale_factor);
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}
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DECLARE_CONVERTER(sc8_item32_le, 1, fc64, 1, PRIORITY_SIMD)
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{
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const item32_t* input = reinterpret_cast<const item32_t*>(size_t(inputs[0]) & ~0x3);
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fc64_t* output = reinterpret_cast<fc64_t*>(outputs[0]);
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const __m128d scalar = _mm_set1_pd(scale_factor / (1 << 24));
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size_t i = 0, j = 0;
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fc32_t dummy;
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size_t num_samps = nsamps;
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if ((size_t(inputs[0]) & 0x3) != 0) {
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item32_sc8_to_xx<uhd::wtohx>(input++, output++, 1, scale_factor);
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num_samps--;
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}
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#define convert_sc8_item32_1_to_fc64_1_nswap_guts(_al_) \
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for (; j + 7 < num_samps; j += 8, i += 4) { \
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/* load from input */ \
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__m128i tmpi = _mm_loadu_si128(reinterpret_cast<const __m128i*>(input + i)); \
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\
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/* unpack */ \
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__m128d tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7; \
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tmpi = \
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_mm_or_si128(_mm_srli_epi16(tmpi, 8), _mm_slli_epi16(tmpi, 8)); /*byteswap*/ \
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unpack_sc32_8x(tmpi, tmp1, tmp0, tmp3, tmp2, tmp5, tmp4, tmp7, tmp6, scalar); \
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\
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/* store to output */ \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + j + 0), tmp0); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + j + 1), tmp1); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + j + 2), tmp2); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + j + 3), tmp3); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + j + 4), tmp4); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + j + 5), tmp5); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + j + 6), tmp6); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + j + 7), tmp7); \
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}
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// dispatch according to alignment
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if ((size_t(output) & 0xf) == 0) {
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convert_sc8_item32_1_to_fc64_1_nswap_guts(_)
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} else {
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convert_sc8_item32_1_to_fc64_1_nswap_guts(u_)
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}
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// convert remainder
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item32_sc8_to_xx<uhd::wtohx>(input + i, output + j, num_samps - j, scale_factor);
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}
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