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75ad0c5516
These differ from the item32 converters in that they don't IQ swap, and also don't have a BE/LE version.
150 lines
8.2 KiB
C++
150 lines
8.2 KiB
C++
//
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// Copyright 2011-2012 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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DECLARE_CONVERTER(sc16_item32_le, 1, fc64, 1, PRIORITY_SIMD)
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{
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const item32_t* input = reinterpret_cast<const item32_t*>(inputs[0]);
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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 << 16));
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const __m128i zeroi = _mm_setzero_si128();
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#define convert_item32_1_to_fc64_1_nswap_guts(_al_) \
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for (; i + 3 < nsamps; 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 + swap 16-bit pairs */ \
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tmpi = _mm_shufflelo_epi16(tmpi, _MM_SHUFFLE(2, 3, 0, 1)); \
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tmpi = _mm_shufflehi_epi16(tmpi, _MM_SHUFFLE(2, 3, 0, 1)); \
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__m128i tmpilo = _mm_unpacklo_epi16(zeroi, tmpi); /* value in upper 16 bits */ \
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__m128i tmpihi = _mm_unpackhi_epi16(zeroi, tmpi); \
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\
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/* convert and scale */ \
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__m128d tmp0 = _mm_mul_pd(_mm_cvtepi32_pd(tmpilo), scalar); \
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tmpilo = _mm_unpackhi_epi64(tmpilo, zeroi); \
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__m128d tmp1 = _mm_mul_pd(_mm_cvtepi32_pd(tmpilo), scalar); \
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__m128d tmp2 = _mm_mul_pd(_mm_cvtepi32_pd(tmpihi), scalar); \
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tmpihi = _mm_unpackhi_epi64(tmpihi, zeroi); \
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__m128d tmp3 = _mm_mul_pd(_mm_cvtepi32_pd(tmpihi), scalar); \
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\
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/* store to output */ \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + i + 0), tmp0); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + i + 1), tmp1); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + i + 2), tmp2); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + i + 3), tmp3); \
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}
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size_t i = 0;
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// dispatch according to alignment
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if ((size_t(output) & 0xf) == 0) {
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convert_item32_1_to_fc64_1_nswap_guts(_)
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} else {
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convert_item32_1_to_fc64_1_nswap_guts(u_)
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}
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// convert remainder
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item32_sc16_to_xx<uhd::htowx>(input + i, output + i, nsamps - i, scale_factor);
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}
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DECLARE_CONVERTER(sc16_item32_be, 1, fc64, 1, PRIORITY_SIMD)
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{
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const item32_t* input = reinterpret_cast<const item32_t*>(inputs[0]);
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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 << 16));
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const __m128i zeroi = _mm_setzero_si128();
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#define convert_item32_1_to_fc64_1_bswap_guts(_al_) \
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for (; i + 3 < nsamps; 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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/* byteswap + unpack -> byteswap 16 bit words */ \
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tmpi = _mm_or_si128(_mm_srli_epi16(tmpi, 8), _mm_slli_epi16(tmpi, 8)); \
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__m128i tmpilo = _mm_unpacklo_epi16(zeroi, tmpi); /* value in upper 16 bits */ \
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__m128i tmpihi = _mm_unpackhi_epi16(zeroi, tmpi); \
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\
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/* convert and scale */ \
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__m128d tmp0 = _mm_mul_pd(_mm_cvtepi32_pd(tmpilo), scalar); \
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tmpilo = _mm_unpackhi_epi64(tmpilo, zeroi); \
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__m128d tmp1 = _mm_mul_pd(_mm_cvtepi32_pd(tmpilo), scalar); \
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__m128d tmp2 = _mm_mul_pd(_mm_cvtepi32_pd(tmpihi), scalar); \
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tmpihi = _mm_unpackhi_epi64(tmpihi, zeroi); \
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__m128d tmp3 = _mm_mul_pd(_mm_cvtepi32_pd(tmpihi), scalar); \
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\
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/* store to output */ \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + i + 0), tmp0); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + i + 1), tmp1); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + i + 2), tmp2); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + i + 3), tmp3); \
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}
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size_t i = 0;
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// dispatch according to alignment
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if ((size_t(output) & 0xf) == 0) {
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convert_item32_1_to_fc64_1_bswap_guts(_)
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} else {
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convert_item32_1_to_fc64_1_bswap_guts(u_)
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}
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// convert remainder
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item32_sc16_to_xx<uhd::htonx>(input + i, output + i, nsamps - i, scale_factor);
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}
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DECLARE_CONVERTER(sc16_chdr, 1, fc64, 1, PRIORITY_SIMD)
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{
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const sc16_t* input = reinterpret_cast<const sc16_t*>(inputs[0]);
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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 << 16));
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const __m128i zeroi = _mm_setzero_si128();
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#define convert_chdr_1_to_fc64_1_guts(_al_) \
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for (; i + 3 < nsamps; 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 16-bit pairs */ \
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__m128i tmpilo = _mm_unpacklo_epi16(zeroi, tmpi); /* value in upper 16 bits */ \
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__m128i tmpihi = _mm_unpackhi_epi16(zeroi, tmpi); \
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\
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/* convert and scale */ \
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__m128d tmp0 = _mm_mul_pd(_mm_cvtepi32_pd(tmpilo), scalar); \
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tmpilo = _mm_unpackhi_epi64(tmpilo, zeroi); \
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__m128d tmp1 = _mm_mul_pd(_mm_cvtepi32_pd(tmpilo), scalar); \
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__m128d tmp2 = _mm_mul_pd(_mm_cvtepi32_pd(tmpihi), scalar); \
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tmpihi = _mm_unpackhi_epi64(tmpihi, zeroi); \
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__m128d tmp3 = _mm_mul_pd(_mm_cvtepi32_pd(tmpihi), scalar); \
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\
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/* store to output */ \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + i + 0), tmp0); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + i + 1), tmp1); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + i + 2), tmp2); \
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_mm_store##_al_##pd(reinterpret_cast<double*>(output + i + 3), tmp3); \
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}
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size_t i = 0;
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// dispatch according to alignment
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if ((size_t(output) & 0xf) == 0) {
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convert_chdr_1_to_fc64_1_guts(_)
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} else {
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convert_chdr_1_to_fc64_1_guts(u_)
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}
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// convert remainder
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chdr_sc16_to_xx(input + i, output + i, nsamps - i, scale_factor);
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}
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